I have a Kubota M135X with front axle suspension, it's the only class that has the front axle suspension for Kubota, so far we haven't had any problems and don't expect any soon the only thing that was kind of a problem was the exhaust cover so you don't burn your hand on the exhaust, a bolt was gone and made it raddle a lot so I just put a bolt in it and there wasn't a problem any more. We have 823 hours on it and we have only had to change the air filters an the oil but it is a great tractor with lots of reliability and power